This document summarizes a presentation on beams, slabs, and columns. It lists the group members presenting and defines beams, slabs, and columns. It describes different types of beams, slabs, reinforcement details, formwork types, construction process including casting, compaction and curing. Construction examples are provided and materials used are outlined.

1. PRESENTATION
ON
BEAM , SLAB , COLUMN

3. Presented By : Group-05 Year : 2nd, Sem : 2nd
Name of the Group Members :
 MOHAMMED NASIL AFTAD – 12-01-03-141
 MD. MOHIBUL HASAN – 12-01-03-112
 SAFFAT RABBY MUNAYEM – 12-01-03-106
 MD. MUSABBIR AHMED – 12-01-03-156
 MD. MYNUL KARIM – 12-01-03-126
 MAKSUDUR RAHMAN – 12-01-03-146
 BISWAJITH DEB RAHUL – 12-01-03-120
 SHARMIN SIDDIKA – 12-01-03-131
 AFSANA KHAN – 12-01-03-151
 S.M. TOWFIQ ISLAM – 11-02-03-047

5.  Column is a vertical
structural member
 It transmits the
load from
ceiling/roof slab
and beam,
including its self-
weight to the
foundation.

6. Long
Column/
Slender
Short
Column
Intermediate
Column

7. Horizontal
member of a
structure
Carries
transverse loads

8. SIMPLYSUPPORTED
BEAM
OVERHANGINGBEAM CANTILEVERBEAM
FIXEDBEAM PROPPED
CONTINUOUS
BEAM

9. It is a flat
horizontal
surface
It is supported by
beam and
column
It transfers load
to the beam

10. GRANAIT
MARBEL
•*ONE WAY * TWO WAY * FLAT * BEAM
*RIBBED
CONCRETE
WOODEN

11. SLAB
BEAM
COLUMN

12.  1. U.D.C. CONSTRUCTION
TEJGAON INDUSTRIAL AREA, DHAKA
 2. RANGS BABYLONIA
TEJGAON INDUSTRIAL AREA, DHAKA
 3. RESIDENTIAL AREA
BASUNDHARA RESIDENTIAL AREA , DHAKA

13. Sand
Cement
Reinforcement

14. Vibrator
Cutter
Mixing Machine

16.  A rectangular
column must
have at least 4
reinforcements
at 4 corners

17.  Circular column
should have
minimum 6
reinforcements
 Reinforcement
should be min 1%
and max 8%

18.  It is done when
length of
reinforcement bar
is small but we
need longer
reinforcement
 Provided in mid
span
 Tied with hooks

19.  Columns have closed
lateral ties spaced
approximately
uniformly across the
column
 Resist shear force
and bursting out
effect
 10mm Ø, 12mm Ø
bars are used

20. Normal
spacing = S
in mid span
Spacing
near support
joint = S/2

21. Used to
resist
expansion
The hooks
shall be bent
to 135º

22. Must be leak
proof, smooth
inside and
properly aligned
Should be
maintained 1.5
in clear cover

23.  Concrete is
casted in two lifts
 It should not be
casted from more
than 5 feet high
to avoid concrete
segregation

24.  Compaction is done by
vibrator
 Construction joints are
provided for better
bonding between new
and old concrete
 Formwork is removed
after 3 days

25. Provides water
for hydration
reaction
Increases the
strength up to
2.5 times
Done for 21 days
Gunny bags are
used for curing

27. STEEL FORMWORK WOODEN FORMWORK

28.  A min. of 0.2% bar
is to be provided
for the
compression in
order to take care
of the deflection
 Extra tops are used
in the support
joints

29.  Used to resist
shear and
diagonal tension
stresses in a
beam
 Shall be minimum
size of 8mm ∅ in
case of lateral
load resistance

30. Alternate hook is
provided
The hooks shall
be bent to 135º
Stirrup
distribution is
dense near
support

31. Casting and
Curing are done
simultaneously
for beam and
slab.
Casting of lower
part is done
earlier

32. Side of
formwork is
removed after
3 days
Bottom part is
removed after
21-28 days

34. Steel Formwork Wooden Formwork

35. BRACING
PROPS

36. Slab
reinforcement
includes straight
bar , cranked bar
Extra tops near
the supports

37. Mainly 1.5 "
clear cover is
maintained
CC blocks are
used

38.  Compaction is
done with Patta

39.  Curing : It is done
for 21 days
 Removal of
Formwork: After
21 days formwork
is removed